SSC
CHEMISTRY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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How does the structure of the cell membrane help the cell regulate water?
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Phospholipid molecules form a double layer of the cell membrane.
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The heads of one layer face outside, the heads of the other face inside the cell.
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The heads attract water, tails repel water
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All of the above
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Explanation:
Detailed explanation-1: -The cell membrane is also called the phospholipid bilayer. As one layer’s hydrophilic (water-loving) head faces the outside of the cell, it allows water to move in, and the other layer’s head faces the inside the cell, it allows water to be regulated here.
Detailed explanation-2: -Animal cells regulate the movement of water by controlling the movement of ions; that is, they cope with osmotic pressure by balancing ionic concentrations on the two sides of the cell membrane. Also, animal cells have membranes containing aquaporins or water channels.
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